Merge pull request #181 from atsuhiro/fix-book#2

Fix sample code in the book

docs/en/src/define_complex_object.md

@@ -25,7 +25,7 @@ impl MyObject {
 
     async fn value_from_db(
         &self,
-        ctx: &Context<'_'>,
+        ctx: &Context<'_>,
         #[arg(desc = "Id of object")] id: i64
     ) -> FieldResult<String> {
         let conn = ctx.data::<DbPool>().take();

docs/zh-CN/src/define_complex_object.md

@@ -23,11 +23,11 @@ impl MyObject {
 
     async fn value_from_db(
         &self,
-        ctx: &Context<'_'>,
+        ctx: &Context<'_>,
         #[arg(desc = "Id of object")] id: i64
     ) -> FieldResult<String> {
         let conn = ctx.data::<DbPool>().take();
         Ok(conn.query_something(id)?.name)
     }
 }
-```
+```